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Add on_unimplemented note to Index

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This commit is contained in:
Manish Goregaokar 2015-01-26 20:33:07 +05:30
parent 59dcba5d14
commit 6a90eca8fc
1 changed files with 2 additions and 0 deletions
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2
src/libcore/ops.rs
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@ -895,6 +895,7 @@ shr_impl_all! { u8 u16 u32 u64 usize i8 i16 i32 i64 isize }
/// }
/// ```
#[lang="index"]
#[rustc_on_unimplemented = "the type `{Self}` cannot be indexed by `{Index}`"]
#[stable]
pub trait Index<Index: ?Sized> {
type Output: ?Sized;
@ -933,6 +934,7 @@ pub trait Index<Index: ?Sized> {
/// }
/// ```
#[lang="index_mut"]
#[rustc_on_unimplemented = "the type `{Self}` cannot be mutably indexed by `{Index}`"]
#[stable]
pub trait IndexMut<Index: ?Sized> {
type Output: ?Sized;